Struct GreptimeDbDialect

pub struct GreptimeDbDialect {}

GreptimeDb dialect

Trait Implementations

impl Clone for GreptimeDbDialect

fn clone(&self) -> GreptimeDbDialect

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GreptimeDbDialect

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Dialect for GreptimeDbDialect

fn is_identifier_start(&self, ch: char) -> bool

Determine if a character is a valid start character for an unquoted identifier

fn is_identifier_part(&self, ch: char) -> bool

Determine if a character is a valid unquoted identifier character

fn is_delimited_identifier_start(&self, ch: char) -> bool

Determine if a character starts a quoted identifier. The default implementation, accepting “double quoted” ids is both ANSI-compliant and appropriate for most dialects (with the notable exception of MySQL, MS SQL, and sqlite). You can accept one of characters listed in Word::matching_end_quote here

fn supports_filter_during_aggregation(&self) -> bool

Does the dialect support FILTER (WHERE expr) for aggregate queries?

fn dialect(&self) -> TypeId

Determine the TypeId of this dialect.

fn identifier_quote_style(&self, _identifier: &str) -> Option<char>

Return the character used to quote identifiers.

fn is_proper_identifier_inside_quotes( &self, _chars: Peekable<Chars<'_>>, ) -> bool

Determine if quoted characters are proper for identifier

fn supports_within_after_array_aggregation(&self) -> bool

Returns true if the dialect supports ARRAY_AGG() [WITHIN GROUP (ORDER BY)] expressions. Otherwise, the dialect should expect an ORDER BY without the WITHIN GROUP clause, e.g. ANSI

fn supports_group_by_expr(&self) -> bool

Returns true if the dialects supports group sets, roll up, or cube expressions.

fn supports_in_empty_list(&self) -> bool

Returns true if the dialect supports (NOT) IN () expressions

fn supports_start_transaction_modifier(&self) -> bool

Returns true if the dialect supports BEGIN {DEFERRED | IMMEDIATE | EXCLUSIVE} [TRANSACTION] statements

fn supports_named_fn_args_with_eq_operator(&self) -> bool

Returns true if the dialect supports named arguments of the form FUN(a = ‘1’, b = ‘2’).

fn convert_type_before_value(&self) -> bool

Returns true if the dialect has a CONVERT function which accepts a type first and an expression second, e.g. CONVERT(varchar, 1)

fn parse_prefix( &self, _parser: &mut Parser<'_>, ) -> Option<Result<Expr, ParserError>>

Dialect-specific prefix parser override

fn parse_infix( &self, _parser: &mut Parser<'_>, _expr: &Expr, _precedence: u8, ) -> Option<Result<Expr, ParserError>>

Dialect-specific infix parser override

fn get_next_precedence( &self, _parser: &Parser<'_>, ) -> Option<Result<u8, ParserError>>

Dialect-specific precedence override

fn parse_statement( &self, _parser: &mut Parser<'_>, ) -> Option<Result<Statement, ParserError>>

Dialect-specific statement parser override